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Review of the Configuration and Transient Stability of Large-scale Renewable Energy Generation through Hybrid DC Transmission

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CES Transactions on Electrical Machines and Systems 2024年第2期8卷 115-126页

作者： xinshou tian Yongning Chi Longxue Li Hongzhi Liu Institute of Energy Power Innovation North China Electric Power UniversityBeijing 102206China China Electric Power Research Institute No.15Xiaoying East RoadQingheHaidian DistrictBeijing 100192China.

Based on the complementary advantages of Line Commutated Converter(LCC)and Modular Multilevel Converter(MMC)in power grid applications,there are two types of hybrid DC system topologies:one is the parallel connection of LCC converter stations and MMC converter stations,and the other is the series connection of LCC and MMC converter stations within a single *** hybrid DC transmission system faces broad application prospects and development potential in large-scale clean energy integration across regions and the construction of a new power system dominated by new energy sources in *** paper first analyzes the system forms and topological characteristics of hybrid DC transmission,introducing the forms and topological characteristics of converter-level hybrid DC transmission systems and system-level hybrid DC transmission ***,it analyzes the operating characteristics of LCC and MMC inverter-level hybrid DC transmission systems,provides insights into the transient stability of hybrid DC transmission systems,and typical fault ride-through control ***,it summarizes the networking characteristics of the LCC-MMC series within the converter station hybrid DC transmission system,studies the transient characteristics and fault ridethrough control strategies under different fault types for the LCC-MMC series in the receiving-end converter station,and investigates the transient characteristics and fault ride-through control strategies under different fault types for the LCC-MMC series in the sending-end converter station.

关键词： Hybrid DC transmission Transient stability Configuration Control system

Coordinated Damping Optimization Control of Sub-synchronous Oscillation for DFIG and SVG

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CSEE Journal of Power and Energy Systems 2021年第1期7卷 140-149页

作者： xinshou tian Yongning Chi Yan Li Haiyan Tang Chao Liu Yuanyuan Su State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems(China Electric Power Research Institute) Beijing 100192China

Currently, the power electronics-based devices, includinglarge-scale non-synchronized generators and reactivepower compensators, are widely used in power grids. This helpsintroduce the coupling interactions between the devices andthe power grid, resulting in a new sub-synchronous oscillationphenomenon. It is a critical element for the stability operation ofthe power grid and its devices. In this paper, the sub-synchronousoscillation phenomenon of the power grid connected with largescalewind power generation is analyzed in detail. Then, inorder to damp the sub-synchronous oscillation, a coordinateddamping optimization control strategy for wind power generatorsand their reactive power compensators is proposed. The proposedcoordinated control strategy tracks the sub-synchronousoscillation current signal to correct the corresponding controlsignal, which increases the damping of power electronics. Theresponse characteristics of the proposed control strategy areanalyzed, and a self-optimization parameter tuning method basedon sensitivity analysis is proposed. The simulation results validatethe effectiveness and the availability of the proposed controlstrategy.

关键词： Coordinated damping optimization control DFIG self-optimization parameter tuning method subsynchronous oscillation SVG

Dual-mode Switching Fault Ride-through Control Strategy for Self-synchronous Wind Turbines

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Journal of Modern Power Systems and Clean Energy 2023年第2期11卷 579-588页

作者： xinshou tian Yongning Chi Peng Cheng Wei He Yunpeng Zhou Jianzhu Hu China Institute of Energy and Transportation Integrated Development North China Electric Power UniversityBeijing 102206China State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems China Electric Power Research InstituteBeijing 100192China State Grid Zhejiang Electric Power Co. Economic and Technological Research InstituteHangzhouChina

The installed capacity of renewable energy generation has continued to grow rapidly in recent years along with the global energy transition towards a 100%renewable-based power *** the same time,the grid-connected large-scale renewable energy brings significant challenges to the safe and stable operation of the power system due to the loss of synchronous ***,self-synchronous wind turbines have attracted wide attention from both academia and ***,the understanding of the physical operation mechanisms of self-synchronous wind turbines is not *** particular,the transient characteristics and dynamic processes of wind turbines are fuzzy in the presence of grid ***,it is difficult to design an adaptive fault ride-through(FRT)control ***,a dual-mode switching FRT control strategy for self-synchronous wind turbines is *** FRT control strategies are *** one strategy,the amplitude and phase of the internal potential are directly calculated according to the voltage drop when a minor grid fault *** other dual-mode switching control strategy in the presence of a deep grid fault includes three parts:vector control during the grid fault,fault recovery vector control,and self-synchronous *** proposed control strategy can significantly mitigate transient overvoltage,overcurrent,and multifrequency oscillation,thereby resulting in enhanced transient ***,simulation results are provided to validate the proposed control strategy.

关键词： Dual-mode switching self-synchronous wind turbine transient stability fault ride-through(FRT)control

Transient characteristics and adaptive fault ride through control strategy of DFIGs considering voltage phase angle jump

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Journal of Modern Power Systems and Clean Energy 2017年第5期5卷 757-766页

作者： xinshou tian Yongning CHI Weisheng WANG Gengyin LI Haiyan TANG Zhen WANG State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems China Electric Power Research InstituteHaidian DistrictBeijing 100192China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityChangping DistrictBeijing 102206China

Wind power in China has experienced fast development in recent years. However, areas rich in wind power resources are often far away from loads centers,which leads to weak connection between wind turbines and power grid. When a grid fault occurs, new transient characteristics in weak grid integrated with doubly-fed induction generators(DFIGs) may present, such as voltage phase angle jump. Current control strategies for wind turbine with strong grid connection are hard to be adapted under weak gird connection. This paper explores the transient characteristics of DFIGs under voltage phase angle jump through analyzing the operation and control characteristics of DFIGs connected into weak grid when the voltage phase angle jumps. Fault ride through(FRT) control strategy of DFIGs based on adaptive phase-locked loop is proposed to adapt weak grid condition. The reference frame of the proposed strategy will be changed in real-time to track the operation condition of DFIGs according to the terminal voltage, and different phase tracking method is adopted during the grid fault. Field data analysis and time domain simulation are carried out. The results show that voltage phase angle jumps when a grid fault occurs, which weakens the FRT capability of DFIGs, and the proposed FRT control strategy can optimize transient characteristics of DFIGs, and improve the FRT capability of DFIGs.

关键词： DFIGs Voltage phase angle jump Transient characteristics Adaptive FRT control strategy

Fault Ride Through Strategy of DFIG Using Rotor Voltage Direct Compensation Control Under Voltage Phase Angle Jump

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CSEE Journal of Power and Energy Systems 2019年第4期5卷 515-523页

作者： xinshou tian Weisheng Wang Xiang Li Yongning Chi Yan Li Haiyan Tang State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems(China Electric Power Research Institute) Beijing 100192China State Grid Beijing Changping Electric Power Supply Com-pany Beijing 100031China

Wind power has developed rapidly in recent years,and large-scale wind power facilities connected to power grids will bring many new *** new operation charac-teristics of power grids with doubly-fed induction generator(DFIG)may exhibit,for example voltage phase angle jumps(VPAJ).VPAJ can negatively impact the fault ride through(FRT)performance of *** paper firstly investigates the physical mechanism and the operation characteristics of DFIG with *** is noted that the current control strategies designed for voltage amplitude changes are not suitable for ***,the paper develops an FRT optimization control strategy under VPAJ which optimizes the DFIG operation ***,simulations of a 250 MW wind farm are presented which validate the proposed FRT strategy.

关键词： DFIG FRT strategy rotor voltage direct compensation control voltage phase angle jump

Voltage phase angle jump characteristic of DFIGs in case of weak grid connection and grid fault

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Journal of Modern Power Systems and Clean Energy 2016年第2期4卷 256-264页

作者： xinshou tian Gengyin LI Yongning CHI Weisheng WANG Haiyan TANG Xiang LI State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University) Changping DistrictBeijing 102206China China Electric Power Research Institute Haidian DistrictBeijing 100192China

In the condition of connecting large scale doubly-fed induction generators (DFIGs) into weak grid,the closely coupled interactions between wind generators and power grid becomes more *** new fault characteristics including voltage phase angle jump will emerge,which will influence the power quality of power ***,there are very few studies focusing on the mechanism of voltage phase angle jump under grid fault in a weak grid with wind turbine *** paper focuses on the scientific issues and carries out mechanism studies from different aspects,including mathematical deduction,field data analysis and time domain *** on the analysis of transientcharacteristics of DFIGs during the grid fault,this paper points out that the change of terminal voltage phase angle in DFIGs is an electromagnetism transition process,which is different from conventional synchronous ***,the impact on transient characteristics of voltage phase angle are revealed in terms of fault ride through(FRT) control strategies,control parameters of current inner-loop of rotor-side converter and grid strength.

关键词： DFIGs Weak grid Fault ride through Voltage phase angle jump

Overview of Mechanism and Mitigation Measures on Multi-frequency Oscillation Caused by Large-scale Integration of Wind Power

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CSEE Journal of Power and Energy Systems 2019年第4期5卷 433-443页

作者： Yongning Chi Bingjie Tang Jiabing Hu xinshou tian Haiyan Tang Yan Li Sujuan Sun Lei Shi Lei Shuai State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems China Electric Power Research InstituteBeijing 100192China Huazhong University of Science and Technology Wuhan 430074China NARI Group Corporation Nanjing 211000China Siemens Gamesa Renewable Energy A/S Brande 7330Denmark

In recent years,the large-scale integration of re-newable energy sources represented by wind power and the widespread application of power electronic devices in power systems have led to the emergence of multi-frequency oscillation problems covering multiple frequency segments,which seriously threaten system stability and restrict the accommodation of renewable *** oscillation problems related to renewable energy integration have become one of the most popular topics in the field of wind power integration and power system stability *** has received extensive attention from both academia and industries with many promising research results achieved to *** paper first analyzes several typical multi-frequency oscillation events caused by large-scale wind power integration in domestic and foreign projects,then studies the multi-frequency oscillation problems,including wind turbine’s shafting torsional oscillation,sub/super-synchronous oscillation and high frequency *** state of the art is systematically summarized from the aspects of oscillation mechanism,analysis methods and mitigation measures,and the future research directions are explored.

关键词： High-frequency resonance multi-frequency oscillation sub-synchronous oscillation super-synchronous oscillation wind power integration

Engineering practices for the integration of large-scale renewable energy VSC-HVDC systems

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Global Energy Interconnection 2020年第2期3卷 149-157页

作者： Yan Li Hongzhi Liu Xiaojie Fan xinshou tian China Electric Power Research Institute Haidian DistrictBeijing 100192P.R.China College of Electrical and Electronic Engineering North China Electric Power UniversityChangping DistrictBeijing 102206P.R.China.

With the continuous development of power electronic devices,intelligent control systems,and other technologies,the voltage level and transmission capacity of voltage source converter (VSC)-high-voltage direct current (HVDC) technology will continue to increase,while the system losses and costs will gradually ***,it can be foreseen that VSC-HVDC transmission technology will be more widely applied in future large-scale renewable energy development *** VSC-HVDC transmission technology can be used to overcome issues encountered by large-scale renewable energy transmission and integration projects,such as a weak local power grid,lack of support for synchronous power supply,and insufficient accommodation ***,this solution also faces many technical challenges because of the differences between renewable energy and traditional synchronous power generation *** on actual engineering practices that are used worldwide,this article analyzes the technical challenges encountered by integrating large-scale renewable energy systems that adopt the use of VSC-HVDC technology,while aiming to provide support for future research and engineering projects related to VSC-HVDC-based large-scale renewable energy integration projects.

关键词： VSC-HVDC Renewable energy integration DC grid Engineering practice

双馈风电机组与静止无功发生器交互作用原理及系统振荡特性研究

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电网技术 2017年第2期41卷 486-492页

作者：迟永宁田新首汤海雁李想新能源与储能运行控制国家重点实验室(中国电力科学研究院) 北京市海淀区100192

大量基于电力电子设备的非同步电源和无功补偿装置接入形成了新型电力系统,使得集群风电与电网之间以及与邻近电力电子驱动设备之间的交互作用十分复杂,电力系统的故障运行特性可能发生改变,从而给电网的安全稳定运行带来多方面的挑战... 详细信息

大量基于电力电子设备的非同步电源和无功补偿装置接入形成了新型电力系统,使得集群风电与电网之间以及与邻近电力电子驱动设备之间的交互作用十分复杂,电力系统的故障运行特性可能发生改变,从而给电网的安全稳定运行带来多方面的挑战。通过对系统扰动在双馈风电机组和静止无功发生器内传导过程的理论分析,分别给出了其动态响应特性,推导了双馈风电机组与静止无功发生器在系统扰动下相互激励的表现形式,分析了双馈风电机组与静止无功发生器之间交互作用对双馈风电机组转子侧变流器控制参数和静止无功发生器控制参数的敏感性,并给出双馈风电并网系统的振荡特性。最后,通过时域仿真验证了上述理论分析的正确性。

关键词：双馈风电机组静止无功发生器电力电子交互作用振荡特性